Context target will hold the JSON response. You can also convert the JSON into XML. Refer to the support forum post on JSON for more information.

If XML is needed then put the JSONtoXML custom plugin after the Web Service activity and then map the output data stream of the custom plugin to the target activity which will consume the data. Use multiple stream option in the custom plugin and give the data stream name as default and map to the target activity

Attached is the sample JSON response based on the actual REST API URL i the put-context-var.

To get the Authorization token you can call the REST API URL first:

https://maxcvservices.dnb.com/rest/Authentication

Pass the User token and the Password in the header and you will get the Authorization token which needs to be passed in the above REST call to get the Company profile. Refer to this link to get more help on how to get the credentials http://developer.dnb.com/docs/2.0/guides/DnBDirect2-Ordering-Reports.pdf